Shurflo Comfort Air 275-3331 Operating instructions

Brand: Shurflo

Model: Comfort Air 275-3331

Type: Operating instructions

Shurflo Comfort Air 275-3331 is a 12V DC powered fan with a remote control that can be used for both intake and exhaust ventilation. It features a motorized dome that opens and closes automatically based on temperature settings or rain detection, ensuring optimal airflow and protection from the elements. The fan also includes a variety of safety features, such as a thermal overload protector and a high-amp dome safety control, for added peace of mind.

Thank you for purchasing this fan from SHURflo. Please take a few minutes to read this entire manual before attempting

installation. If you have any questions, please contact your nearest dealer or SHURflo. This unit will work at an infinite

range of speeds in automatic or manual modes at a wide range of temperature settings. Automatic dome-sensing control

allows it to work with most vent covers. Automatic shut-off when it’s raining and motor thermal protection are just a couple

of the exciting safety features of this fan.

Standard Features

• True Variable Speed Fan

• Easy-Remove Screen

• Fits Standard 14” x 14” Roof Openings

• Thermally Protected Motor

• High-Amp Dome Safety Control

• Remote-Control

• Intake & Exhaust Operation

• Motorized Dome

• Automatic Rain Sensor

• Auto-Temp Control from 60°F – 100°F

Contents

• 1 Comfort Air™ Fan Unit, including

-1 upper unit

-1 internal flange & 4 screws

o Supplied trim fits roofs 3-1/2”-5-1/4”

See specifications on page 4 for trim

model # for other roof sizes

• 1 Remote Control

• 1 Remote Wall Mount & 2 screws

• 1 9-Volt DC Remote Control Battery

• 1 Installation and Operation Manual

Location

• Fan must be installed with the hinge facing

the direction of travel.

• Locate bi-directional fan at least 3 feet from

any exhaust vent.

l Do not install fan in cooking area.

Important Information

• SHURflo recommends professional

installation.

• Please read the entire manual before

attempting installation.

• This unit requires 12 VDC Power only.

• This fan uses 5 Amps. Use 6A fuse.

• Follow all local building / electrical codes.

• Black wire is negative ground [ - ].

• Red wire is positive power [ + ].

• Never reverse polarity. Reverse polarity can

damage circuit board.

• Never turn the fan on with the screen

removed.

• Always turn off power before removing

screen.

• Never place any objects in moving blade path.

Tools and Materials Required

• #2 Philips screwdriver

• Scraper

• Wire stripper/crimp tool

• Butyl sealing tape (1/8” x 1” x 6’)

• 18 Gauge or larger copper stranded wire

• Insulated wire connectors

• 6-Amp fused circuit

• All weather Silicone sealant

---Rubber roofs require EPDM sealant

• 3/4” or 1” x #8 self-tapping screws [ 28 ] for

roof mounting. Screws removed from old

unit can be used.

Comfort Air™

Fan with Remote

Installation and Operation Manual

Models 275-3330 / 275-3331

911

724

A 04/05

page 1 of 4

jFan Hi Fan Speed Increase +

Press this button to increase fan speed.

kFan Off Fan Stop & Power Off

Press this button to stop the fan in Manual.

Press this button to exit Auto Mode [fan will

stop and dome will close].

lFan Lo Fan Speed Decrease –

Press this button to decrease fan speed.

mDome Open

Press this button to Open the Dome.

nDome Stop

Press this button to Stop the Dome.

oDome Close

Press this button to Close the Dome.

pExhaust / Intake

Press this button to change fan direction.

Thermostat Control & LED Light Bank

Adjust fan temperature from

60°F [green lights] to 100°F [red lights]

Remote Reset

Left green light and right red light are used

when resetting the remote control. See

Section on Resetting The Remote.

qCooler ( Auto Mode )

Press this button to set fan in Auto mode and

to lower the thermostat temperature setting

rWarmer ( Auto Mode )

Press this button to set fan in Auto mode and

to raise the thermostat temperature setting

sBattery Compartment ( Rear of Remote )

Slide open rear compartment to replace 9V

battery.

Resetting The Remote Never reset remote control with screen removed.

It may be necessary at times to reset the remote to match the Comfort Air™

unit. This would be done to make

one remote work for 2 fans, to make 2 fans operate

from different remotes, or when purchasing a new remote

for an installed unit.

To reset the remote to a fan unit:

1. Press and hold FAN OFF [ k ], until green and red lights blink [about 10 seconds].

2. WITHOUT RELEASING FAN OFF Button ] k ], press the Reset Button on the fan unit [see fan picture].

3. Hold buttons until fan motor goes into high speed. Fan unit is now reset to this remote.

To avoid resetting 2 fans at the same time, completely turn off the power to the fan you do not want to reset.

COMFORT AIR™ FAN REMOTE COMMANDER

911-724-A 04/05 page 2 of 4

NOTICE:

Unit will not operate without

remote. If remote is lost or

damaged, turn power off and

close dome with hand crank.

Call your dealer or SHURflo for

a replacement remote control.

Rear of Remote

Installation

1. Turn off all power to fan.

2. If it is a new installation, cut and frame out a

14” x 14” hole. Prepare all wiring and fusing per

specifications.

3. Remove old fan inside and out.

4. Carefully remove all old roof sealant. Surface

must be clean and dry.

5. Check fit of new fan inside and out.

--Hinge must face toward front of the RV.

--Verify correct wiring size and length.

--Check inside ceiling flange clearance.

Supplied trim fits roofs 3-1/2” to 5-1/2” thick.

Trim can be cut or call SHURflo for other sizes

--Holes in roof exterior can be filled with wood

putty or sealant to ensure a better seal later.

6. Apply 1” Butyl putty tape around mounting hole

pattern on roof side of fan chassis.

--Center the tape over the mounting holes.

7. Place unit on roof and check alignment inside

and outside.

--Hinge must be to the front of the RV.

8. Screw unit to roof with 28 screws.

--Screws removed from previous unit can be

used.

9. Seal all edges and screws with silicone sealant,

or use EPDM Rubber roof sealant for rubber

roofs.

--Do not allow sealant to contact dome hinge or

rain sensor.

10. Check wire polarity and connect wires inside of

coach.

--Red wire is positive (+).

--Black wire is negative (-).

--Polarity must be correct or damage to circuit

board will result!

11. Test hand crank by pulling down on crank and

turning CW to open dome.

--Crank must be in upper position for power

operation.

--Dome motor must be stopped before moving

hand crank in or out.

12. Place lower trim in place and secure with 4

screws provided.

--Hand crank should be facing front.

13. Turn on main power to unit.

14. Place 9V battery in Fan Remote Commander.

15. Reset remote and test unit. See Section on

Resetting The Remote.

Ceiling View of Fan

Operation

HAND DOME OPERATION

Pull down on manual crank and turn to open or

close the dome by hand. Push crank up to lock

gears for power dome operation.

MANUAL MODE

Press Fan Hi 1 or Fan Lo 3 buttons or Dome Open

4, Stop 5 or Close 6 buttons to operate in Manual

Mode.

Changing Fan Direction

Press Exhaust/Intake button 7 to change direction.

AUTO MODE

Press Cooler button 8 or Warmer button 9 on the

remote to lower or raise thermostat temperature

setting. Dome will open and fan will start only above

selected operating temperature. When temperature

drops 5° F below set point, dome will close and fan

will shut off. Dome will automatically open and fan

will restart when temperature set point is reached.

Changing Fan Direction

Press Exhaust / Intake button 7 to change fan

direction.

Adjusting Fan Speed or Dome Opening

Press Fan Hi button 1 or Lo button 3 to adjust fan

speed. Press Dome Open button 4 or Close button

6 to adjust dome opening. Press Dome Stop button

5 to stop dome in desired position.

To Exit Auto Mode

To exit Auto Mode press Fan Off button 2. Dome

will close and fan will power off. Holding down

Cooler Button 8 will exit Auto Mode with fan running.

Rain Sensor

This unit is equipped with a rain sensor to

automatically shut off the fan when rain is detected

in Auto Mode only. Sensor is not activated in

Manual Mode.

When rain sensor is activated, dome will close and

unit will turn off. Fan will not restart when rain

sensor dries out. Fan unit must be restarted in

Manual or Auto Modes.

Hand Crank

911-724-A 04/05 page 3 of 4

Fan and Remote Cleaning

Turn off all power, and remove s

creen by

unsnapping 4 fan clips. Wipe fan and remote with

damp rag with mild detergent only. Dry unit after

wiping. Do not immerse fan or remote in water.

To replace screen, align clips and snap into place.

NEVER OPERATE FAN WITH SCREEN REMOVED!

Screen Clips (4)

Reset

RESET

Specifications

Voltage 10 - 14 Volt DC

Maximum Amps 5 Amps Use 6-Amp Fuse

Hole Size 14” x 14” Standard

[13.75” to 14.25” square]

Roof Thickness

2” to 3-1/2” Trim # 21-1613-00

3-1/2” to 5-1/4” Trim # 21-1613-01 [Standard]

5” to 6-1/4” Trim # 21-1613-02

Maximum CFM

Intake 920 CFM

Exhaust 1055 CFM

Thermostat Range 60°F to 100°F

Remote Control Model 84-940-xx

Remote Battery 9 Volt DC

Dimensions 17” x 17” x 4-1/4” closed

17” x 17” x 12-1/2” open

Materials UV resistant ABS and

Polycarbonate

Wire 12” Red (+) Black (-) 18 AWG

SHURflo reserves the right to update specifications, prices, or make substitutions

SHURflo «

5900A Katella Ave.

Cypress, CA 90630

(800) 854-3218

(562) 795-5200

FAX (562) 795-7564

SHURflo East

52748 Park Six Court

Elkhart, IN 46514-5427

(800) 762-8094

(574) 262-0478

FAX (574) 264-2169

www.shurflo.com

SHURflo Ltd.

Unit 5 Sterling Park

Gatwick Road, Crawley

West Sussex, RH10 2QT

United Kingdom

+44 1293 424000

FAX +44 1293 421880

êISO certified facility

**ISO certified facility

Limited Warranty Information

SHURflo Pump Manufacturing Co. (SHURflo) warrants this product to be free from defects in material or workmanship to the original owner f

or personal or family use, for a

period of 2 years, 5 years warranty on exterior Dome and Screen

from original date purchase. This product is warranted for 90 days from original date of purchase when used

for commercial or business application. The warranty may provide for repair, including labor or exchange or replacement of unit, or parts as necessary.

An owner having a part or unit believed to be defective should contact a local RV dealer, or contact the nearest SHURflo office.

SHURflo will not accept t

he return of parts or units, will not send out parts or units or allow for the repair or replacement of parts or units under this warranty without giving

their prior expressed authorization and without proof of date of purchase.

If SHURflo finds the unit o

r part to be defective and is the subject of a valid warranty claim, SHURflo will pay the dealer a labor allowance and supply repair part(s) or a

replacement unit as applicable.

This warranty does not extend to parts or units which if, in the judgment of S

HURflo, have been damaged or rendered defective by misuse, negligence, accident, improper

installation, unreasonable use or if the unit or part has been tampered with or altered in any manner.

In no event, whether as a result of breach of contract, tort (

including negligence) or otherwise, shall SHURflo be liable to any owner of a unit for any special damages arising

out of the use, or inability to use that unit, nor for any claim against the owner by another party. Some states and provinces do not allow

limitations on how long an implied

warranty shall last or do not allow the exclusion or limitation of incidental or consequential damages. So the above limitation or exclusion may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights that may vary from state to state.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate

radio frequency energy and if not install

ed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to ra

dio or

television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or

more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and the receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

In order to maintain compliance with FCC regulations, shielded cables must be used with this equipment. Operation with non-

approved equipment or

unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications made to the

equipment without the approval of the manufacturer could void the user’s authority to operate this equipment.

Operation is subject to the following two conditions:

(1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesired operation of the device.